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The CIS Ultimax 100 is a Singapore gas operated, rotating bolt machine-gun produced since 1982 by the Singapore Chartered Industries. It is chambered for the 5.56 mm M193 or NATO cartridge which it takes from a 20- or 30-round box or 100-round drum magazine and fires at a rate of 600 rounds per minute with a muzzle velocity of 970 meters per second.
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The United Defense M42 was an American made sub-machine-gun manufactured by Marlin for the US government from 1938 to 1940. Some 15000 guns were produced, which then disappeared, probably to clandestine organisations in Europe and the Far East. A large quantity certainly went to the Netherlands government forces in the Dutch East Indies. The M42 was chambered for the 9mm Parabellum cartridge which it took from a 20 round magazine and fired at a rate of 700 rounds per minute. The M42 was equipped with a fire selector lever on the right side of the receiver above the trigger which could select between single-shot and automatic fire modes. Unusually, if the safety catch was on and the weapon was then cocked, the safety would be removed and the weapon set to single shot mode.
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The Mekanika Uru is a Brazilian blowback operated selective fire sub-machine-gun adopted by the Brazilian army in 1977. The Uru uses 17 parts, no pins and no screws and can be totally disassembled in 30 seconds. It is chambered for the 9 mm Parabellum round which it takes from a 30-round box magazine and fires at a rate of 750 rounds-per-minute or single shots. With a muzzle velocity of 388 meters per second.
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The US Model M3 was America's solution to the requirement for a cheap and simple sub-machine-gun to replace the heavy and expensive Thompson sub-machine-gun during the Second World War. The M3 was a blowback operated, automatic weapon chambered for the .45 ACP cartridge and the 9 mm Parabellum though the bolt, parallel and magazine needed to be changed to make the switch. The magazine had a capacity of thirty rounds and the M3 had a rate of fire of 400 rounds per minute with a muzzle velocity of 280 meters-per-second. The M3 had a retractable wire stock and a 203 mm long barrel.
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The US Model M3A1 was an American blowback operated sub-machine-gun produced in 1944 as a modificaton to the US M3 after criticisms received from the troops. The M3A1 was chambered for the .45 ACP cartridge which it took from a 30-round box magazine and fired at a cyclic rate of 450 rounds per minute and a muzzle velocity of 280 meters per second, and an effective range of 200 meters. The M3A1 had a 203 mm long barrel, retractable wire stock and was fitted with a blade foresight and aperture rearsight.
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The Uzi is an Israeli blowback operated, selective fire machine pistol. It takes a 9 mm Parabellum round from a 25-, 32- or 40-round box and has a cyclic rate of 600 rounds-per-minute. It has a muzzle velocity of 420 meters-per-second. The Uzi has an effective range of 200 meters and is produced with both a fixed wooden stock and a folding metal stock.
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Abbreviations
Warfare
